Caristi Fixed Point Theorem in Metric Spaces with a Graph

1Department of Mathematics and Statistics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia2Department of Mathematical Science, The University of Texas at El Paso, El Paso, TX 79968, USA

Received 27 January 2014; Accepted 11 February 2014; Published 13 March 2014